spring boot2.x 整合redis 使用redis 做默认缓存

依赖：

 

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>

 

 

application.properties

# REDIS (RedisProperties)

# Redis数据库索引（默认为0）
spring.redis.database=0  
# Redis服务器地址
spring.redis.host=127.0.0.1
# Redis服务器连接端口
spring.redis.port=6379  
# Redis服务器连接密码（默认为空）
spring.redis.password=  
# 连接池最大连接数（使用负值表示没有限制）
spring.redis.pool.max-active=8  
# 连接池最大阻塞等待时间（使用负值表示没有限制）
spring.redis.pool.max-wait=-1  
# 连接池中的最大空闲连接
spring.redis.pool.max-idle=8  
# 连接池中的最小空闲连接
spring.redis.pool.min-idle=0  
# 连接超时时间（毫秒）
spring.redis.timeout=0 

 

集群模式：

# 集群默认只能使用0
spring.redis.database=0
spring.redis.password=password
# 连接超时时长（毫秒）
spring.redis.timeout=60000
spring.redis.jedis.pool.max-active=100
# 连接池最大阻塞等待时间（使用负值表示没有限制）
spring.redis.jedis.pool.max-wait=-1
# 连接池中的最大空闲连接
spring.redis.jedis.pool.max-idle=8
spring.redis.jedis.pool.min-idle=1
# # 获取失败 最大重定向次数 建议节点数/2
spring.redis.cluster.max-redirects=3
spring.redis.cluster.nodes=xxx.xx.xx:7001, xxx.xx.xx:7002 ,xxx.xx.xx:7003
spring.redis.cluster.command-timeout=1

or yml

spring:
  redis:
    password: password   # 密码（默认为空）
    timeout: 6000ms  # 连接超时时长（毫秒）
    cluster:
      nodes:
        - 192.168.1.236:7001
        - 192.168.1.236:7002
        - 192.168.1.236:7003
        - 192.168.1.244:7004
        - 192.168.1.244:7005
        - 192.168.1.244:7006 
    jedis:
      pool:
        max-active: 1000  # 连接池最大连接数（使用负值表示没有限制）
        max-wait: -1ms      # 连接池最大阻塞等待时间（使用负值表示没有限制）
        max-idle: 10      # 连接池中的最大空闲连接
        min-idle: 5       # 连接池中的最小空闲连接

 

做默认缓存

Springboot 2.x 版本 RedisCacheManager 类的配置，【与 1.x 略有不同】

1、1.x 配置方式

@Bean
public CacheManager cacheManager(RedisTemplate redisTemplate) {
    RedisCacheManager cacheManager= new RedisCacheManager(redisTemplate);
    cacheManager.setDefaultExpiration(60);
    Map<String,Long> expiresMap=new HashMap<>();
    expiresMap.put("Product",5L);
    cacheManager.setExpires(expiresMap);
    return cacheManager;
}

2、2.x 配置方式

    @Bean
    public CacheManager cacheManager(RedisConnectionFactory redisConnectionFactory) {
        RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig()
                .entryTtl(Duration.ofHours(1)); // 设置缓存有效期一小时
        return RedisCacheManager
                .builder(RedisCacheWriter.nonLockingRedisCacheWriter(redisConnectionFactory))
                .cacheDefaults(redisCacheConfiguration).build();
    }

 

 

config:

import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.StringRedisSerializer;


 

@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {

    @Bean
    public CacheManager cacheManager(RedisTemplate<Object, Object> redisTemplate) {
        RedisCacheManager cacheManager = new RedisCacheManager(redisTemplate);
        cacheManager.setDefaultExpiration(1800);
        return cacheManager;
    }

    @Bean
    public RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory factory) {
        RedisTemplate<Object, Object> template = new RedisTemplate<>();
        template.setConnectionFactory(factory);
        template.setKeySerializer(new StringRedisSerializer());
        template.setValueSerializer(new RedisObjectSerializer());
        return template;
    }
}

package com.goku.demo.config;


import org.springframework.core.convert.converter.Converter;
import org.springframework.core.serializer.support.DeserializingConverter;
import org.springframework.core.serializer.support.SerializingConverter;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.SerializationException;
public class RedisObjectSerializer implements RedisSerializer<Object> {
    private Converter<Object, byte[]> serializer = new SerializingConverter();
    private Converter<byte[], Object> deserializer = new DeserializingConverter();
    private static final byte[] EMPTY_ARRAY = new byte[0];

    @Override
    public Object deserialize(byte[] bytes) {
        if (isEmpty(bytes)) {
            return null;
        }
        try {
            return deserializer.convert(bytes);
        } catch (Exception ex) {
            throw new SerializationException("Cannot deserialize", ex);
        }
    }

    @Override
    public byte[] serialize(Object object) {
        if (object == null) {
            return EMPTY_ARRAY;
        }
        try {
            return serializer.convert(object);
        } catch (Exception ex) {
            return EMPTY_ARRAY;
        }
    }

    private boolean isEmpty(byte[] data) {
        return (data == null || data.length == 0);
    }
}

 

 

test:

@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(classes = DemoApplication.class)
public class TestRedis implements Serializable{

    private final Logger logger = LoggerFactory.getLogger(getClass());

    @Autowired
    private RedisTemplate redisTemplate;

    @Test
    public void test() throws Exception {
        // 保存字符串
        //redisTemplate.opsForValue().set("sea", "111");
        this.logger.info((String) redisTemplate.opsForValue().get("sea"));
    }